UMASS Medical School, Worcester, MA
C.W.L. is the sole author of this commentary and has received advice and suggestions for wording from Ronnie Horner, PhD (a Medical Care editor).
The author declares no conflict of interest.
Reprints: Charles W. Lidz, PhD, UMASS Medical School, 55 Lake Avenue North, Worcester, MA 01655. E-mail: email@example.com.